Review

Add three numbers

100

320 + 102 + 411

833

200

429 + 300 + 223

952

300

521 + 112 + 309

942

400

145 + 327 + 713

1,185

500

974 + 36 + 614

1,624

Estimate sums with three numbers

100

320 + 102 + 411

800

200

429 + 390 + 223

900

300

521 + 172 + 309

1,000

400

155 + 327 + 713

1,200

500

974 + 96 + 614

1,700

Estimate to the nearest 100th(in your head)

100

352 + 128

500

200

142 + 671

800

300

690 - 321

400

400

432 - 108

300

500

960 + 321

1,300

Estimate to the nearest 10th (in your head)

100

324 + 315

640

200

493 - 112

380

300

255 + 159

420

400

691 - 322

370

500

987 - 326

670

Threes Facts

100

3 X 2

6

200

3 X 4

14

300

3 X 6

18

400

3 X 11

33

500

3 X 12

36